Railroad-tie.



G. H. HARDMAN.

RAILROAD TIE.

APPLICATION FILED JAILZZ, 1913,

Patented Sept. 15, 1914.

WITNESSES: 42%

shorten n. militiamen, or FALL R ven, MASSACHUSETTS.

rtMLaoAp-rm.

Speciflcation of Eetters Ya'tsnt. Patented Sept, 15, 1914.

Application filed January 22,1913. Serial No. 743,526.

To all whom it mag concern:

making railroad ties,

used to indicate the Be itknown that I, GEORGE H. HARDMAN, of Fall River, in thecounty of Bristol and State of Massachusetts have invented certain new and, useful Improvements in Railroad-Ties, of whi h the following is a specification. I

My invention relates to a new method of and consists of the hereinafter novel features of constructien,

described in the specification, illustrated in the drawing, and pointed out in the claims. Reference is to be had to the accompanying sheet of drawings, in which numbers are various parts. Figure 1 is a side elevation of the frame which I use in my device. Fig. 2 is a section thereof on line X-Y. Fig. 3 is a plan view of the frame. Fig. 4: isa perspective View of the. complete tie embodying my invention.

Fig. 5 is a view of the branches which I use in making up my tie.

I The requirements of a railroad tie are Then I take asphalt,

strength, resilience, durability, and ability to hold the rail firmly. I accomplish this re- .sult by. taking a mold of desired shape, and

placing a metal frame, #1, in the mold at the bottom. Then I take small trees, sap- Hugs, or branches, #3,cut to desired length, and place them in the mold on the frame :tlzl until I liquefied by either heat or solvent, and put into the mold sufficient to cover the wood'when pressed into shape.

Then I take frame #2 and place it on the wood and asphalt in the mold. A cover is then placed in the mold, and subjected to,

sufiicientpressure I to make the wood and asphalt the required form and density.

Means are provided in the mold to allow the superfluous asphalt to escape so that the result is a uniform production.

It will he noted that frames are provided with interlocking bolts, so that when they are forced together they are firmly fastened, thereby preventing expansion-of the tie.

use any that will answer the purpose.

It is obvious that the multiplication of small trees, saplings, or branches, gives great strength; it is also plain that a tie constructed in the manner described will possess the required resilience, and the wood .be-

fiopte's 02.25116 patent may he obtained for five cents each, byaddressing West-anatom G.

have sufficient for the purpose.

' saplings,

Ido not'confine myself to this design of either frame or bolt, but may in'g covered with asphalt, will be very duraand holding the parts in'place, while the top of my invention is enhanced by the .longedges of the tie" protecting them and bottom frames 1 and 2 being'of skeleton driven into the composition.

' construction permit the railroad spikes to be With the construction of. interlocking bolts shown,"when the two frames are sub-:

jected tofpressure in the mold, the bolts do not inter ere but will be so fastened so that they will hold the top and bottom frames together against any expansion of the compositlon. I

The trees, saplings or branches with the plastic asphaltunder pressure form a homogeneous mass of the reinforced type;

Having thus explained the nature of my invention, and the process of manufacturing the same, what I claim, and desire to secure by Letters Patent, .is

1. A railroadtie composed of small trees,.

in a mold and forced by pressure to de{ sired form and density. I

2. A railroad tie, composed of smalltrees, saplings, with an interlocking frame, placed mold and forced by pressure into desired form and density.

or bra'nches, and asphalt, placed or branches, and asphalt, together in a 3. A railroad tie which comprises a bodyof trees, saplings or branehes with asphalt compressed into a homogeneous mass,

gether with frames at the top and bottom,

' and bolts which connect said frames. In testimony whereof I have afiixed my signature, in presence'oftwo witnesses.

GEORGE H; HARDMAN.

Witnesses:

- WILLIAM C. GRAY,

ETHEL L. SMI'IEL the ccmzniutcnerdfat'ntl, I 

